Grossular
Calcium–aluminium garnet end-member Ca3Al2(SiO4)3, frequent in calc-silicate rocks.
Language and route: German Grossularit from Latin grossularia / Ribes grossularia (gooseberry), later English grossular. German Grossularit from Latin grossularia / Ribes grossularia (gooseberry), later English grossular
Literal gloss: gooseberry-coloured
The name and its history
Abraham Gottlob Werner · Kanelstein 1803; Grossularit 1808 (secondary chronology)
- What does the word literally mean?
- Immediate borrowing or word-formation route: German Grossularit from Latin grossularia / Ribes grossularia (gooseberry), later English grossular. Source form: grossularia (grossularia), glossed ‘gooseberry’. Conventional short gloss: ‘gooseberry-coloured’. A literal gloss and the historical reason for naming must be distinguished.
- What did the original author mean?
- Werner is credited with the name Kanelstein in 1803 and Grossularit in 1808, based on the original specimens.
- Why was the name needed?
- Distinctive garnet varieties needed labels even before the calcium–aluminium end-member scheme.
- What evidence supported the original concept?
- Specimen colour and resemblance supported Werner’s field classification, not a modern thermodynamic end-member assignment.
- How has geology changed the concept?
- Grossular now spans many colours and is distinguished by chemistry; its occurrence can illuminate metamorphic reactions involving Ca-rich protoliths.
Further historical context
Werner is credited with the name Kanelstein in 1803 and Grossularit in 1808, based on the original specimens.
Distinctive garnet varieties needed labels even before the calcium–aluminium end-member scheme.
Specimen colour and resemblance supported Werner’s field classification, not a modern thermodynamic end-member assignment.
Grossular now spans many colours and is distinguished by chemistry; its occurrence can illuminate metamorphic reactions involving Ca-rich protoliths.
Editorial qualification
Original naming passage has not been independently transcribed; a later nomenclatural account cannot by itself establish first coinage.
Related names
Sources
- Mindat — Grossular — Werner cinnamon-stone 1803 vs grossularite 1808; priority requires original page
- Mindat — Garnet Group — present group chemistry and species distinction; modern database, not original coining
- Smith College — Aluminium silicate phase diagram — modern Al2SiO5 pressure-temperature stability fields, model dependent